20807840

素因数分解:

$2^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2767}}^1$

素因数の和:2829

約数の個数: 48

約数和(自身を含む): 50222592

約数和(自身を除く): 29414752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 80, 94, 160, 188, 235, 376, 470, 752, 940, 1504, 1880, 2767, 3760, 5534, 7520, 11068, 13835, 22136, 27670, 44272, 55340, 88544, 110680, 130049, 221360, 260098, 442720, 520196, 650245, 1040392, 1300490, 2080784, 2600980, 4161568, 5201960, 10403920, 20807840]

約数ペア:

[(1, 20807840), (2, 10403920), (4, 5201960), (5, 4161568), (8, 2600980), (10, 2080784), (16, 1300490), (20, 1040392), (32, 650245), (40, 520196), (47, 442720), (80, 260098), (94, 221360), (160, 130049), (188, 110680), (235, 88544), (376, 55340), (470, 44272), (752, 27670), (940, 22136), (1504, 13835), (1880, 11068), (2767, 7520), (3760, 5534)]